Free Tools
Quick construction calculators for blockwork, concrete, paint, tiling and fencing — enter your numbers and get an instant estimate.
Estimate blocks and mortar for wall construction. Enter wall size, openings, block size and joints — the tool estimates blocks, mortar volume and bags.
Open calculator →Compute concrete volume for slabs, walls, beams, columns or footings, split into cement, sand and aggregate for a chosen mix ratio.
Open calculator →Calculate paint litres required from area, coats and product coverage, with wastage and an optional primer coat.
Open calculator →Estimate how many tiles and how much grout you need from area, tile size and wastage.
Open calculator →Estimate panels, posts, gravel boards, postcrete, fixings and post caps for your fencing project.
Open calculator →